<template>
  <div class="container">
    <div class="app-container">
      <!-- 角色管理内容 -->
      <div class="role-operate">
        <el-button @click="showDialog = true" type="primary" size="mini"
          >添加角色</el-button
        >
      </div>
      <!-- 放置table组件 -->
      <el-table :data="list">
        <el-table-column prop="name" align="center" width="200" label="角色">
          <template slot-scope="{ row }">
            <!-- 条件判断 -->
            <el-input v-if="row.isEdit" v-model="row.editRow.name"></el-input>
            <span v-else>{{ row.name }}</span>
          </template>
        </el-table-column>
        <el-table-column prop="state" align="center" width="200" label="启用">
          <!-- 自定义结构 -->
          <template slot-scope="{ row }">
            <el-switch
              v-if="row.isEdit"
              v-model="row.editRow.state"
              :active-value="1"
              :inactive-value="0"
            />
            <span v-else>{{
              row.state === 1 ? "已启用" : row.state === 0 ? "未启用" : "无"
            }}</span>
          </template>
        </el-table-column>
        <el-table-column prop="description" align="center" label="描述">
          <template slot-scope="{ row }">
            <el-input
              v-if="row.isEdit"
              v-model="row.editRow.description"
              type="textarea"
            ></el-input>
            <span v-else>{{ row.description }}</span>
          </template>
        </el-table-column>

        <el-table-column align="center" label="操作">
          <!-- 放置操作按钮 -->
          <template slot-scope="{ row }">
            <template v-if="row.isEdit">
              <!-- 编辑状态 -->
              <el-button @click="btnEditOK(row)" type="primary" size="mini"
                >确定</el-button
              >
              <el-button @click="row.isEdit = false" size="mini"
                >取消</el-button
              >
            </template>
            <template v-else>
              <el-button @click="btnPermission(row.id)" size="mini" type="text"
                >分配权限</el-button
              >
              <el-button @click="btnEditRow(row)" size="mini" type="text"
                >编辑</el-button
              >
              <el-popconfirm
                title="这是一段内容确定删除吗"
                @onConfirm="confirmDel(row.id)"
              >
                <el-button
                  slot="reference"
                  style="margin-left: 10px"
                  size="mini"
                  type="text"
                  >删除</el-button
                >
              </el-popconfirm>
            </template>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页组件 -->
      <el-row type="flex" style="height: 60px" align="middle" justify="end">
        <el-pagination
          :page-size="pageParams.pagesize"
          :current-page="pageParams.page"
          :total="pageParams.total"
          layout="prev, pager, next"
          @current-change="changePage"
        >
        </el-pagination>
      </el-row>
    </div>
    <!-- 新增角色 -->
    <el-dialog
      title="新增角色"
      :visible.sync="showDialog"
      width="500px"
      @close="btnCancel"
    >
      <el-form
        ref="roleForm"
        :model="roleForm"
        :rules="rules"
        label-width="120px"
      >
        <el-form-item prop="name" label="角色名称">
          <el-input v-model="roleForm.name" style="width: 300px" size="mini" />
        </el-form-item>
        <el-form-item label="启用" prop="state">
          <!-- 重置表单需要prop属性 -->
          <!-- 如果不需要校验 就不需要写prop属性 -->
          <el-switch
            size="mini"
            v-model="roleForm.state"
            :active-value="1"
            :inactive-value="0"
          ></el-switch>
        </el-form-item>
        <el-form-item prop="description" label="角色描述">
          <el-input
            v-model="roleForm.description"
            type="textarea"
            :rows="3"
            style="width: 300px"
            size="mini"
          ></el-input>
        </el-form-item>
        <el-form-item>
          <el-row type="flex" justify="center">
            <el-col :span="12">
              <el-button @click="btnOK" type="primary" size="mini"
                >确定</el-button
              >
              <el-button @click="btnCancel" size="mini">取消</el-button>
            </el-col>
          </el-row>
        </el-form-item>
      </el-form>
    </el-dialog>
    <!-- 放置权限弹层 -->
    <el-dialog :visible.sync="showPermissionDialog" title="分配权限">
      <!-- 放置权限数据 -->
      <el-tree
      ref="permTree"
        node-key="id"
        :data="permissionData"
        :props="{ label: 'name' }"
        show-checkbox
        default-expand-all
        :default-checked-keys="permIds"
      />
      <el-row slot="footer" type="flex" justify="center">
        <el-col :span="6">
          <el-button type="primary" size="mini" @click="btnPermissionOK">确定</el-button>
          <el-button size="mini" @click="showPermissionDialog = false">取消</el-button>
      </el-col>
  </el-row>
    </el-dialog>
  </div>
</template>
<script>
import { getPermissionList } from "@/api/permission.js";
import { transListToTreeData } from "@/utils";
import {
  getRoleList,
  addRole,
  updateRole,
  deleteRole,
  getRoleDetail,
  assignPerm
} from "@/api/role.js";
export default {
  name: "Role",
  data() {
    return {
      showPermissionDialog: false,
      permissionData: [],
      currentRoleId: null,
      permIds: [],
      roleForm: {
        name: "",
        description: "",
        state: 0, //默认1启用  关闭0 打开1
      },
      rules: {
        name: [
          { required: true, message: "角色名称不能为空", trigger: "blur" },
        ],
        description: [
          { required: true, message: "角色描述不能为空", trigger: "blur" },
        ],
      },
      showDialog: false,
      list: [],
      //分页参数
      pageParams: {
        page: 1, //第几页
        pagesize: 5, //每页多少条
        total: 0, //总共多少条
      },
    };
  },
  created() {
    this.getRoleList();
  },
  methods: {
    async getRoleList() {
      const { rows, total } = await getRoleList(this.pageParams);
      this.list = rows; //赋值数据
      //  console.log(this.list);
      this.pageParams.total = total;
      //针对每行数据添加一个编辑标志
      this.list.forEach((item) => {
        // item.isEdit = false //添加一个属性初始值为false
        //数据响应式的问题  数据变化 视图更新
        //添加的动态属性 不具备响应式特点
        //this.$set(目标对象，属性名称，初始值) 可以针对目标对象添加的属性 添加响应式
        this.$set(item, "isEdit", false);
        this.$set(item, "editRow", {
          name: item.name,
          state: item.state,
          description: item.description,
        });
      });
      // console.log(this.list);
    },
    changePage(newpage) {
      this.pageParams.page = newpage; //赋值当前页码
      // console.log(newpage);
      this.getRoleList();
    },
    //确定
    btnOK() {
      this.$refs.roleForm.validate(async (isOK) => {
        if (isOK) {
          await addRole(this.roleForm);
          this.$message.success("新增角色成功");
          this.getRoleList();
          this.btnCancel();
        }
      });
    },
    //取消
    btnCancel() {
      this.$refs.roleForm.resetFields(); //重置表单数据
      this.showDialog = false; //关闭弹层
    },
    //点击编辑行
    btnEditRow(row) {
      // console.log(row);
      row.isEdit = true; // 改变行的编辑状态
      //更新缓存数据
      row.editRow.name = row.name;
      row.editRow.state = row.state;
      row.editRow.description = row.description;
      console.log(row.editRow.description);
    },
    //点击取消
    btnCancelEdit(row) {
      // console.log(row);
      row.isEdit = false; // 改变行的编辑状态
      //恢复缓存数据
      row.name = row.editRow.name;
      row.state = row.editRow.state;
      row.description = row.editRow.description;
    },
    //点击确定时触发
    async btnEditOK(row) {
      if (row.editRow.name && row.editRow.description) {
        await updateRole({ ...row.editRow, id: row.id });
        //更新成功
        this.$message.success("更新角色成功");
        //更新显示数据 退出编辑状态
        // row.name = row.editRow.name // eslint的一校验 误判
        // Object.assign(target, source)
        Object.assign(row, {
          ...row.editRow,
          isEdit: false, //退出编辑状态
        }); //规避eslint的误判
      } else {
        this.$message.warning("角色和描述不能为空");
      }
    },
    async confirmDel(id) {
      await deleteRole(id); //调用接口删除
      this.$message.success("删除角色成功");
      if (this.list.length === 1) this.pageParams.page--;
      // console.log(this.list);
      this.getRoleList();
    },
    //点击分配权限
    async btnPermission(id) {
      this.currentRoleId = id;
      const { permIds } = await getRoleDetail(id);
      this.permIds = permIds;
      this.permissionData = transListToTreeData(await getPermissionList(), 0);
      this.showPermissionDialog = true;
    },
    // 点击确定时触发
    async  btnPermissionOK() {
      await assignPerm({
        id: this.currentRoleId,
        permIds: this.$refs.permTree.getCheckedKeys()
      })
      this.$message.success('角色分配权限成功')
      this.showPermissionDialog = false
    }
  },
};
</script>

<style scoped>
.role-operate {
  padding: 10px;
}
</style>
